code: def test_roc_add_to_roc(roc_values):
      fpr1, tpr1 = roc_values
  
      fpr2 = [0.0, 0.2, 0.4, 0.4, 0.6, 0.8, 1.0]
      tpr2 = [0.0, 0.2, 0.4, 0.8, 0.8, 1.0, 1.0]
  
      roc1 = plot.ROC(fpr1, tpr1)
      roc2 = plot.ROC(fpr2, tpr2)
  
      roc1 + roc2
  
imports: from functools import partial
  import sys
  from unittest.mock import Mock
  import numpy
  from matplotlib.testing.decorators import image_comparison
  from sklearn_evaluation import plot
label_desc: Use image node_id 10 for calling a global function with example usage: test_roc_add_to_roc(roc_values) without return types